CVE-2025-13870
December 02, 2025
Mattermost versions 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to validate the user permission when accessing the files and subscribing to the block in Boards, which allows an authenticated user to access other board files and was able to subscribe to the block from other boards that the user does not have access to
Affected Packages
github.com/mattermost/mattermost/server/v8 (GO):
Affected version(s) >=v8.0.0-20230429093631-aac4f2337933 <v8.0.0-20250905150616-ba86dfc5876bFix Suggestion:
Update to version v8.0.0-20250905150616-ba86dfc5876bgithub.com/mattermost/mattermost (GO):
Affected version(s) >=v10.5.0 <v10.5.13Fix Suggestion:
Update to version v10.5.13github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.11.0 <v10.11.5Fix Suggestion:
Update to version v10.11.5github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.11.0 <v10.11.5Fix Suggestion:
Update to version v10.11.5github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.5.0 <v10.5.13Fix Suggestion:
Update to version v10.5.13Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
2.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
EPSS
Base Score:
0.04
